Struts2+Spring2.5+Hibernate3.3整合开发步骤

一、jar包

   下面给出整合开发时Struts 2、 Hibernate、Spring需要的JAR。
struts2-core-2.x.x.jar :Struts 2框架的核心类库
xwork-2.x.x.jar :XWork类库，Struts 2在其上构建
ognl-2.6.x.jar :对象图导航语言（Object Graph Navigation Language），struts2框架通过其读写对象的属性
freemarker-2.3.x.jar :Struts 2的UI标签的模板使用FreeMarker编写
commons-fileupload-1.2.x.jar 文件上传组件，2.1.6版本后需要加入此文件
struts2-spring-plugin-2.x.x.jar ：用于struts2集成Spring的插件
hibernate核心安装包下的(下载路径：http://www.hibernate.org/，点击“Hibernate Core”右边的“Downloads”):
hibernate3.jar
lib\bytecode\cglib\hibernate-cglib-repack-2.1_3.jar
lib\required\*.jar
hibernate 注解安装包下的(下载路径：www.hibernate.org，点击“Hibernate Annotations”右边的“Downloads”):
hibernate-annotations.jar
lib\ejb3-persistence.jar、hibernate-commons-annotations.jar
Hibernate针对JPA的实现包(下载路径：www.hibernate.org，点击“Hibernate Entitymanager”右边的“Downloads”):
hibernate-entitymanager.jar
lib\test\log4j.jar、slf4j-log4j12.jar
Spring安装包下的
dist\spring.jar
lib\c3p0\c3p0-0.9.1.2.jar   lib\aspectj\aspectjweaver.jar、aspectjrt.jar    lib\cglib\cglib-nodep-2.1_3.jar
lib\j2ee\common-annotations.jar     lib\log4j\log4j-1.2.15.jar      lib\jakarta-commons\commons-logging.jar
MYSQL数据库驱动jar

二、配置数据源

在源文件夹下新建Spring配置文件beans.xml，在配置文件中配置c3p0数据源：

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
<property name="driverClass" value="org.gjt.mm.mysql.Driver"/>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/itcast?useUnicode=true&amp;characterEncoding=UTF-8"/>
<property name="user" value="root"/>
<property name="password" value="123456"/>
<!--初始化时获取的连接数，取值应在minPoolSize与maxPoolSize之间。Default: 3 -->
<property name="initialPoolSize" value="1"/>
<!--连接池中保留的最小连接数。-->
<property name="minPoolSize" value="1"/>
<!--连接池中保留的最大连接数。Default: 15 -->
<property name="maxPoolSize" value="300"/>
<!--最大空闲时间,60秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<property name="maxIdleTime" value="60"/>
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<property name="acquireIncrement" value="5"/>
<!--每60秒检查所有连接池中的空闲连接。Default: 0 -->
<property name="idleConnectionTestPeriod" value="60"/>
</bean>

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
..... 略 </bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
     <property name="dataSource" ref="dataSource"/>
     <property name="mappingResources">
     <list>
       <value>cn/itcast/bean/Person.hbm.xml</value>
     </list>
     </property>
     <property name="hibernateProperties">
     <value>
         hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
         hibernate.hbm2ddl.auto=update
         hibernate.show_sql=false
         hibernate.format_sql=false
       </value>
    </property>
</bean>
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
   <property name="sessionFactory" ref="sessionFactory"/>
</bean>
<tx:annotation-driven transaction-manager="txManager"/>

三、实体bean配置模板

实体bean配置模版.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="cn.itcast.bean">
    <class name="Person" table="person">
        <id name="id" >
            <generator class="native"/>
        </id>
        <property name="name" length="10" not-null="true"/>
       <property name="gender" not-null="true" length="5">
         <type name="org.hibernate.type.EnumType">
          <param name="enumClass">cn.itcast.bean.Gender</param>
<!-- 12为java.sql.Types.VARCHAR常量值,即保存枚举的字面值到数据库,如果不指定type参数,保存到数据库的值为枚举的索引值(从0开始) -->
          <param name="type">12</param>
         </type>
        </property>
    </class>
</hibernate-mapping>

四、在web容器中实例化spring容器和配置struts2
<!-- 指定spring的配置文件，默认从web根目录寻找配置文件，我们可以通过spring提供的classpath:前缀指定从类路径下寻找 -->
<context-param>
   <param-name>contextConfigLocation</param-name>
   <param-value>classpath:beans.xml</param-value>
</context-param>
<!-- 对Spring容器进行实例化 -->
<listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
配置struts2
   <filter>
        <filter-name>struts2</filter-name>
        <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>struts2</filter-name>
        <url-pattern>/*</url-pattern>
   </filter-mapping>

五、配置struts.xml

struts2的配置文件模版struts.xml如下。常量struts.objectFactory=spring明确指出将由Spring负责创建Action实例。
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
    "http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<!-- 默认的视图主题 -->
    <constant name="struts.ui.theme" value="simple" />
    <constant name="struts.objectFactory" value="spring" />
  <package name="person" namespace="/person" extends="struts-default">
   <global-results>
    <result name="message">/WEB-INF/page/message.jsp</result>
   </global-results>
  <action name="action_*" class="personList" method="{1}">
   <result name="list">/WEB-INF/page/persons.jsp</result>
   <result name="add">/WEB-INF/page/add_person.jsp</result>
   <result name="edit">/WEB-INF/page/edit_person.jsp</result>
  </action>
    </package>
</struts>
为了能从spring容器中寻找到Action bean，要求action配置的class属性值和spring中bean的名称相同。如下:

<package name="itcast" namespace="/person" extends="struts-default">
<action name="list" class="personListAction">
                         .....
</action>
</package>


六、使用spring解决struts2乱码问题。(在web.xml中配置)

<filter>
<filter-name>encoding</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
  <param-name>encoding</param-name>
  <param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encoding</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

七、使用spring解决hibernate因session关闭导致的延迟加载例外问题。。(在web.xml中配置)

<filter>
        <filter-name>OpenSessionInViewFilter</filter-name>
        <filter-class>org.springframework.orm.hibernate3.support.OpenSessionInViewFilter</filter-class>
       <init-param>
   <!-- 指定org.springframework.orm.hibernate3.LocalSessionFactoryBean在spring配置文件中的名称,默认值为sessionFactory.如果LocalSessionFactoryBean在spring中的名称不是sessionFactory,该参数一定要指定,否则会出现找不到sessionFactory的例外 -->
            <param-name>sessionFactoryBeanName</param-name>
            <param-value>sessionFactory</param-value>
      </init-param>
</filter>
<filter-mapping>
        <filter-name>OpenSessionInViewFilter</filter-name>
        <url-pattern>/*</url-pattern>
</filter-mapping>

八、struts2的标签

<%@ page language="java" contentType="text/html; charset=UTF-8"    pageEncoding="UTF-8"%>
<%@taglib uri="/struts-tags" prefix="s" %>

<s:form action="action_edit" method="post" namespace="/person">
<s:hidden name="person.id"/>
姓名:<s:textfield name="person.name"/><br>
<input type="submit" value="发送"/>
</s:form>

<s:iterator value="persons" >
<s:property value="id"/>, <s:property value="name"/>
  <a href='<s:url action="action_editUI" namespace="/person"><s:param name="person.id" value="id"/></s:url>'>修改</a>
</s:iterator>



本文来自CSDN博客，转载请标明出处：http://blog.csdn.net/zwjxf/archive/2010/07/13/5731018.aspx

评论

1 楼 wangsunli 2011-07-18